mlx90308ccc Micro Electronics Ltd., mlx90308ccc Datasheet - Page 7

• Manufacturer Part Number: mlx90308ccc
• Description: Programmable Sensor Interface
• Manufacturer: Micro Electronics Ltd.

Unique Features
Customization
Melexis can customize the MLX90308 in both
hardware and firmware for unique requirements.
The hardware design provides 64 bytes of RAM, 3
kbytes of ROM, and 48 bytes of EEPROM for use
by the firmware.
Special Information
The output of the sensor bridge is amplified via
offset and gain amplifiers and then converted to the
correct output signal form in one of the output
stages.
The sensitivity and offset of the analog signal chain
are defined by numbers passed to the DAC
interfaces from the microcontroller core (GN[9:0]
and OF[9:0]). The wide range of bridge offset and
gain is accommodated by means of a 2-bit coarse
adjustment DAC in the offset adjustment (CSOF
[1:0]), and a similar one in the gain adjustment
(CSGN[2:0]). The signal path can be directed
through the processor for digital processing. Two I/
O pins are available for analog inputs or digital
outputs. These pins can be used for alarms on
various points on the analog signal path and built-in
or external temperature values.
Programming and Setup
The
compensation coefficients programmed for a
particular bridge sensor to create the sensor
system. Programming the EEPROM involves
some
circuitry, Melexis’ setup software, and a PC.
The communications interface circuitry is
available in a development board. This circuitry
communicates with the PC via a standard RS-
232 serial communications port.
Cross Reference
There are no known devices which the MLX
90308CCC can replace.
ESD Precautions
Observe standard ESD control procedures for
CMOS semiconductors.
MLX902xx Name of Sensor
MLX90308CCC Programmable Sensor Interface
MLX90308
minimal
communications
needs
to
have
interface
the
Rev Y.X
Page 7
Table 2. Absolute Maximum Ratings
Supply voltage (ratiometric) V
Supply voltage (ratiometric) V
Supply voltage (operating),
Reverse voltage protection
Supply current, Current Mode, I
Supply current, Voltage Mode, I
Output current, I
Output current (short to V
Output current (short to V
Output voltage, V
Power dissipation, P
Operating temperature range, T
Storage temperature range, T
Maximum junction temperature, T
Programmable Sensor Interface
VMO
VMO
22/Aug/98
MLX90308CCC
D
Rev 2.2
DD
SS
DD
), I
DD
), I
V
DD1
Min
S
Max
SCVMO
SCVMO
DD
DD
A
Max
23/Oct/01
J
-55 to +150°C
-40 to +140°
100mA
71mW
3.5mA
4.5mA
150°C
Page 7
-0.7V
+11V
4.5V
8mA
8mA
35V
6V